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1 | //libroardsp.h: |
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2 | |
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3 | #ifndef _LIBROARDSP_H_ |
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4 | #define _LIBROARDSP_H_ |
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5 | |
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6 | #include <roaraudio.h> |
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7 | |
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8 | // defines |
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9 | #define ROARDSP_MAX_FILTERS_PER_CHAIN 8 |
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10 | |
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11 | #define ROARDSP_FILTER_NONE 0 |
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12 | #define ROARDSP_FILTER_AMP 1 |
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13 | #define ROARDSP_FILTER_LOWP 2 |
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14 | #define ROARDSP_FILTER_HIGHP 3 |
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15 | |
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16 | // types: |
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17 | |
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18 | struct roardsp_filter { |
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19 | int channels; |
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20 | int bits; |
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21 | void * inst; |
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22 | int (*calc )(struct roardsp_filter * filter, void * data, size_t samples); |
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23 | int (*uninit)(struct roardsp_filter * filter); |
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24 | }; |
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25 | |
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26 | struct roardsp_filterchain { |
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27 | int filters; |
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28 | struct roardsp_filter * filter[ROARDSP_MAX_FILTERS_PER_CHAIN]; |
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29 | }; |
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30 | |
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31 | struct roardsp_lowp { |
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32 | uint32_t freq; // in mHz (0Hz..4MHz) |
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33 | uint16_t a, b; |
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34 | int32_t old[ROAR_MAX_CHANNELS]; |
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35 | }; |
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36 | |
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37 | // funcs: |
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38 | int roardsp_filter_str2id(char * str); |
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39 | char * roardsp_filter_id2str(int id); |
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40 | int roardsp_filter_init (struct roardsp_filter * filter, struct roar_stream * stream, int id); |
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41 | int roardsp_filter_uninit(struct roardsp_filter * filter); |
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42 | int roardsp_filter_calc (struct roardsp_filter * filter, void * data, size_t len); |
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43 | |
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44 | int roardsp_fchain_init (struct roardsp_filterchain * chain); |
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45 | int roardsp_fchain_uninit(struct roardsp_filterchain * chain); |
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46 | int roardsp_fchain_add (struct roardsp_filterchain * chain, struct roardsp_filter * filter); |
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47 | int roardsp_fchain_calc (struct roardsp_filterchain * chain, void * data, size_t len); |
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48 | |
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49 | #endif |
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50 | |
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51 | //ll |
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